There’s a certain amount of comfort to be taken from living in an American city during the Trump era—that is, if you're not thrilled with where the nation at large has lately been headed. I suspect a lot of people were very encouraged when their cities refused to use local resources for ICE enforcement, or more than 300 mayors said they would remain committed to the Paris Agreement. Mike Bloomberg helped rally those mayors and others, and even agreed to pay $15 million toward UN operating costs when the U.S. withdrew. You sometimes get this sense that just maybe, with the help of some kindly billionaires, cities can rally together and take a crack at a more progressive America.

Bloomberg has long been something of a patron saint for the power of cities as leaders, especially when it comes to climate change. But lately, since Trump's election, Mike's city-centric vision has become suddenly more relevant—which explains Bloomberg Philanthropies' major new move in this space.